Used on p/n 128766 auto pilot control panel onboard 420 ft wagb class coast guard vessels. multi function timer module - controls the release of the relay coil voltage; operating voltage 24v - 240v ac/dc; time range 0.1 seconds to 10 hours; operating range 0.85 to 1.1xun; operating temperature -22 to +55 deg c; module size lg 1.378 ins x h 1.732 ins x d 0.394 ins